WSTECH APS Series - DC Connection

Original Operating Instructions
APS Series – Outdoor Hybrid Inverter
Installation
APS-Series 120 Operating Instructions v320 EN
Page 106 of 213
4.6.4 DC Connection (Versions with 1000 V
DC
and 1500 V
DC
)
WARNING!
Danger to life due to uneven distribution of the DC power on the
APUs!
When the complete DC power is connected on one APU the cooper
rails can be damaged. This may cause damage to the product and
result in serious injury or death to persons within the products vicinity.
• The DC power must be evenly distributed on both APUs.
NOTICE
Damage to the product due to overvoltage!
High no-load voltage can cause damage.
• Ensure that the no-load DC voltage never exceeds the
maximum input voltage of the product.
NOTICE
Damage to the product due to incorrect connection!
An incorrect connection of the DC cables can cause damage.
• When connecting observe proper polarity.
Information for cable dimensioning:
• The ambient temperature in the connection area is < 65°C.
• The connection of the DC cables is done via the LV-fuse holders. The
connections differ depending on the voltage version and fuse holder
(Section 4.6.4.1).
Requirements:
If the battery has no circuit breaker or fuse, a circuit breaker or fuse must be installed
between the battery and the product which is able to securely switch off the short-
circuit current of the battery under fault conditions.